Give the comparison of DC and AC distribution.
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The high voltage AC and DC transmission and distribution system have the same origin and destination.
The power generated is always in AC. It is then stepped up and down appropriately (In India, power generated usually at 11kV, stepped up to 66kV, then stepped down at different stations.). Then distributed at around 11kV and finally 440V (3 phase) for household usage. The frequency is maintained at around 50 Hertz. Not much of power conversion is required here.
In case of DC, the generated voltage 11kV is stepped up and converted to high voltage DC. This is done using power electronic converters. At the receiving end, the voltage is converted back to AC. This is done by inverters. This is then distributed. The main advantage is that the power factor can be maintained at unity. Hence no reactive drop. But it does have a few disadvantages but still suitable for long distribution transmission.
Hope you understand
The power generated is always in AC. It is then stepped up and down appropriately (In India, power generated usually at 11kV, stepped up to 66kV, then stepped down at different stations.). Then distributed at around 11kV and finally 440V (3 phase) for household usage. The frequency is maintained at around 50 Hertz. Not much of power conversion is required here.
In case of DC, the generated voltage 11kV is stepped up and converted to high voltage DC. This is done using power electronic converters. At the receiving end, the voltage is converted back to AC. This is done by inverters. This is then distributed. The main advantage is that the power factor can be maintained at unity. Hence no reactive drop. But it does have a few disadvantages but still suitable for long distribution transmission.
Hope you understand
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